more fantasy passive mobs

I really like how Minecraft has a mix of real stuff and imaginary stuff, but there are so few fantasy passive mobs. Nearly all of the passive mobs in the game exist in real life (or at least have a similar real-life counterpart). I think the only exceptions are the sniffer, mooshroom, and nautilus (although the nautilus is named after a real animal and looks like an ammonite, a prehistoric creature from the time of the dinosaurs). Also, nearly all of the aggressive mobs (not including neutral mobs) are fantasy. I think the only exceptions are the spider and the silverfish (although those are both way bigger than in real life). It would be really cool to see the passive mobs get some more fantasy friends to even it out. Especially if you people at Mojang never add more real-life aggressive mobs. It would be kind of weird for almost all real things to be depicted as good and almost all fake things to be depicted as bad.